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package dk.daoas.adressevedligehold;
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import java.io.BufferedReader;
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import java.io.IOException;
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import java.io.InputStream;
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import java.io.InputStreamReader;
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import java.nio.charset.Charset;
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import java.util.List;
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import org.apache.commons.fileupload.FileItem;
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import com.google.common.base.Splitter;
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import dk.daoas.adressevedligehold.util.DeduplicateHelper;
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public abstract class AbstractAddressSource implements AddressSource {
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protected DeduplicateHelper<String> dirigeringsCache = new DeduplicateHelper<String>();
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protected FileItem file;
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protected InputStream is;
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protected InputStreamReader isr;
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protected BufferedReader br;
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protected int lineCount = 0;
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public AbstractAddressSource(FileItem file) {
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this.file = file;
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}
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@Override
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public String getFilename() {
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// TODO Auto-generated method stub
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return file.getName();
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}
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@Override //AutoCloseable
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public void close() throws Exception {
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System.out.println("Closing BK after lines " + lineCount);
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try {
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if (br != null)
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br.close();
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if (isr != null)
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isr.close();
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if (is != null)
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is.close();
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file.delete();
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} catch (Exception e) {
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System.out.println("Error on closing " + e.getMessage() );
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}
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}
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/**
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* Reads the first line, validates that there are the expected number of fields, and then
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* re-initilze the inputstream - this is for file formats that does not use a header line.
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*
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* @param exptectedFieldCount
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* @param seperator
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* @throws IOException
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*/
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protected void validatNoHeaderLine(int exptectedFieldCount, char seperator) throws IOException {
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try (
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InputStream is1 = file.getInputStream();
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InputStreamReader isr1 = new InputStreamReader(is1, Charset.forName("ISO-8859-1") );
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BufferedReader br1 = new BufferedReader(isr1)
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) {
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String line = br1.readLine();
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if (line == null) {
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throw new IOException("Can't read 1st line - is file empty?");
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}
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List<String> parts = Splitter.on(seperator).splitToList(line);
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if (parts.size() != exptectedFieldCount) {
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throw new IOException("Not enough fields in CSV file. Found " + parts.size() + ", expected " + exptectedFieldCount);
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}
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}
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is = file.getInputStream();
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isr = new InputStreamReader(is, Charset.forName("ISO-8859-1") );
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br = new BufferedReader(isr);
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}
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protected void validateWithHeader(int expectedFieldCount, char seperator) throws IOException {
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try {
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is = file.getInputStream();
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isr = new InputStreamReader(is, Charset.forName("ISO-8859-1") );
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br = new BufferedReader(isr);
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String line = br.readLine();
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if (line == null) {
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throw new IOException("Can't read 1st line - is file empty?");
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}
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List<String> parts = Splitter.on(seperator).splitToList(line);
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if (parts.size() != expectedFieldCount) {
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throw new IOException("Not enough fields in CSV file. Found " + parts.size() + ", expected " + expectedFieldCount);
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}
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} catch (Exception e) {
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try {
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br.close();
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isr.close();
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is.close();
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} catch (Exception e2) {
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System.out.println("Error cleaning up resources");
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}
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throw e; // Re-throw
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}
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}
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}
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